Fig. 3
From: Does income have a non-linear impact on residents’ BMI? Re-examining the obesity Kuznets curve

The difference in education level for the effect of income on BMI. Note: In order to visually reflect the impact of income on BMI, we did not consider other variables and only plotted the graph using the coefficients of income and income squared in the regression. Income had no significant impact on the BMI of residents with a university degree or higher, which is not shown